| Ulmus americana 'L'Assomption' | |
|---|---|
| Species | Ulmus americana |
| Cultivar | 'L'Assomption' |
| Origin | L'Assomption Experimental Station, Quebec, Canada |
The American Elm cultivar Ulmus americana 'L'Assomption' was selected from seedlings grown from X-irradiated seed at the eponymous experimental station in Quebec before 1965.
Description
'L'Assomption' is a very slow-growing tree.
Pests and diseases
The tree is highly resistant to Dutch elm disease. No other specific information is available, but the species as a whole is highly susceptible to Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola, and highly preferred for feeding by the Japanese Beetle Popillia japonica in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.
Cultivation
The tree is not known to be in cultivation beyond Canada.
Accessions
North America
- Morden Arboretum, Morden, Canada. Two trees received 1970 from the Forest Research Laboratory in Sillary, Quebec. Acc. no. 65-0328
References
- ^ Ouellet, C-E., & Pomerleau, R., (1965). Can. J. Bot. 1965; 43:85-96
- Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
- Miller, Fredric; Ware, George (2001-02-01). "Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae)". Journal of Economic Entomology. 94 (1). Oxford University Press (OUP): 162–166. doi:10.1603/0022-0493-94.1.162. ISSN 0022-0493. PMID 11233108. S2CID 42980569.
- Miller, Fredric; Ware, George; Jackson, Jennifer (2001-04-01). "Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae)". Journal of Economic Entomology. 94 (2). Oxford University Press (OUP): 445–448. doi:10.1603/0022-0493-94.2.445. ISSN 0022-0493. PMID 11332837. S2CID 7520439.
- ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2
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